2. Dr. Erik Selvig –Â Thor, The Avengers
I’ll have to admit, I’m not actually familiar enough with Thor lore (comic book or otherwise) to comment on whether there was anyone else who could have taken Selvig’s place, but then, I also didn’t know he was an invented character until I looked him up.
All things considered, I think Selvig was used quite well. Unlike Hawkeye, we didn’t care as much about him being one of Loki’s brainwashed lackies for most of the film. In fact, I thought it was quite clever to keep Selvig around in such a major role in The Avengers.